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CTH:YAG
Cr:Tm:Ho:YAG (CTH:YAG) is an excellent crystal that emits 2.1μm wavelength laser and is widely used in medical, military and meteorological fields. WISOPTIC uses high-purity raw materials and sophisticated technology to produce high-quality CTH:YAG crystals. This crystal is capable to output high pulse energy and is suitable for repetitive frequency operation. WISOPTIC provide laser rods with diameters of 3 to 6 mm and lengths of 50 to 120 mm.
Features of CTH:YAG
-High slope efficiency, room temperature operation
-Suitable for lamp pumping or LD pumping
-Safe for human eyes
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LiNbO3 / PPLN Crystal
LiNbO3 (Lithium Niobate) crystal is a multifunctional material that integrates properties of piezoelectric, ferroelectric, pyroelectric, nonlinear, electro-optical, photoelastic, etc. LiNbO3 has good thermal stability and chemical stability. Periodically Polarized Lithium Niobate (PPLN) is a highly efficient wavelength conversion non-linear crystal with wide light transmission range (0.4-4.5 µm) covering the near and mid-infrared regions, long service life, and can be used for frequency doubling, beat frequency, sum frequency, optical parametric oscillation and optical parametric amplification, etc.
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Tm:YAP Crystal
Tm:YAP crystal is one of the most important crystals for LD pumping 2 μm laser. The anisotropic structure of Tm:YAP produces anisotropic emission cross section. Tm:YAP crystals with different orientations have different output wavelengths and operating forms for different functions. Tm:YAP has the following main advantages: Excellent physical and chemical properties; Higher output efficiency at 2 μm than Tm:YAG; Direct output of linearly polarized light. LD pump absorption bandwidth is 4nm wider than that of Tm:YAG crystal; The 795nm pump band matches the emission wavelength of AlGaAs diodes better. -
Tm:YLF Crystal
Tm3+:YLF crystal has a high absorption peak around 792 nm which locates in the diode pumping range, and also has a cross-relaxation process that provides the possibility for each absorbed pump photon to produce to ions at higher laser energy level. Tm3+: YLF laser is very suitable as a pump source for Ho3+:YAG laser. This is due to the good overlap of the emission band of Tm3+:YLF and the absorption band of Ho3+:YAG, and the ability to produce a linearly polarized output. Furthermore, the refractive index of Tm3+:YLF decreases with temperature, leading to negative thermal lens effect, which is partially compensated by positive lens effect caused by convex end. -
Tm:YAG Crystal
The self-quenching mechanism of the H4 and F4 levels of Tm:YAG crystals can generate two-photon excitation at the upper level, potentially making it an efficient way for lasers to achieve high quantum efficiency. Tm:YAG crystals are widely used in lidar and other atmospheric detection fields because of their operating wavelength of 2013nm. The fluorescence lifetime of Tm in Tm:YAG crystal is twice as long as that of Tm:YAP crystal, the emission cross-sectional area of Tm:YAG crystal is slightly lower than that of Tm:YAP crystal, and the peak absorption band is 785nm, which is more suitable for semiconductor diode pumping. -
Yb:YAG Crystal
Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG) is more suitable for diode-pumping than the traditional Nd-doped laser crystal. Features of Yb:YAG produced by WISOPTIC:
• High slope efficiency
• Broad absorption bands (about 8 nm @ 940 nm)
• No excited-state absorption or up-conversion
• Easily pumped by reliable InGaAs diodes at 940 nm (or 970 nm)
• Low fractional heating (less than 11%)
• High thermal conductivity
• Good mechanical strength
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Er:YAG Crystal
Erbium Doped Yttrium Aluminum Garnet (Er:YAG) lases at 2940 nm which is the same as hydroxyl absorption peak. Therefore the rays produced by Er:YAG can be strongly absorbed by biological tissues which make Er:YAG lasers being widely used in medical area, such as dental (hard tissues), orthopedics, etc. Er:YAG produced by WISOPTIC has high quality of good internal optical uniformity and high slope efficiency. -
Cr4+:YAG Crystal
Chromium Doped Yttrium Aluminum Garnet (Cr4+: YAG) is an excellent material for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 or other Nd/Yb doped lasers at wavelength 0.8~1.2 μm. Cr4+: YAG might replace traditional material, such as LiF, organic Dye and color centers due to its advantages such as: being chemically stable, durable, UV resistant, having good thermal conductivity and high damage threshold (＞500 MW/cm2 ), and being easy to be operated. WISOPTIC provides Cr4+:YAG with Cr4+ doping level of 0.5~3 mol% and with cross sections from 2 × 2 mm2 to 14 × 14 mm2 and length from 0.1 mm to 12 mm. The initial transmission is 10% ~92% according to customers' requirements. -
BBO POCKELS CELL
BBO（Beta-Barium Borate, β-BaB2O4）based Pockels cells operate from approximately 0.2 - 1.65 µm and are not subject to tracking degradation. BBO exhibits low piezoelectric response, good thermal stability, and low absorption... -
Periodically Poled Lithium Niobate (PPLN)
WISOPTIC provide high quality LN crystals including: pure LiNbO3, MgO:LN, Periodically Poled Lithium Niobate (PPLN), and MgO:PPLN. The doping ratio of MgO is typically 5%. WISOPTIC's PPLN could be used at 460-5100nm, and the polarization period is 4.0-35μm. These PPLN crystals in various sizes and period could be coated and mounted according to customer's request. WISOPTIC also provide heater/oven (heating type: heating resistance) and temperature controller for PPLN. -
CERAMIC REFLECTOR
WISOPTIC produces a variety of lamp-pumped ceramic reflectors for industrial lasers of welding, cutting, marking, as well as medical lasers. Specific products can be provided according to customer's needs. -
DYE LASER HANDPIECE
WISOPTIC offers in-house made Dye laser handpiece @ 585nm and 650nm. Dye laser handpiece 585nm is used mainly to treat facial telangiectasia, and dye laser handpiece 650nm for removal of green tattoo, etc.
Dye laser handpiece made from WISOPTIC has higher conversion efficiency than that of any competing product. (65%~75% for 532/585nm, 45%~55% for 532/650nm)
With dye laser handpiece, it's very easy to produce laser beam at 585nm or 650nm (only need a normal laser source of 532nm).
